getr ERROR 10061 in smtp email demo

Hi,
I tried the VCL SBB latest version and would like to test the smtp email client. I got the error 10061. I use port 465 and tried implicit and explicit SSL mode. I also have entered my user name and password for our smtp email server of my university.
What to do?
Thanks

10061 error stands for "No connection could be made because the target machine actively refused it". So its a server problem. Most likelly you are trying to connect to a wrong port or your IP is blocked by firewall.